Electric sad-iron.



N. E. STARR.

ELECTRIC SAD IRON. "APPLICATION FILED AUG. 28, 1914.

"1,185,729. Patent ed June 6,1916.

I. II \\vi .7 4

UNITED STAT ES PATENT OFFICE.

NENA E. STARR, 0F TOWNSHIP 15, DOUGLAS COUNTY, NEBRASKA.

ELECTRIC SAID-IRON.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed August 28, 1914. Serial No. 859,088;

- the heating element so that three distinct de grees of heat may beprovided for, the construction involving a particular arrangement ofheating contacts on the iron, and a special construction of socket forcooperation with said contact.

. The invention in the preferred form of details will be described inthe following specification, reference being had particularly to theaccompanying drawings, in which':-- 1 a Figure 1 is a perspective viewof the improved sad iron. Fig. 2 is a vertical sectional viewillustrating one disposition of the energizing means. -Fig. 3 is asimilar view showing another arrangement of such means. Fig. 1 is adiagrammatic view of the heating circuits. Fig. 5 is a verticalsectional viewthrough the socket.

The improved sad iron, in the details which are non-essential in theirrelation to the present invention, comprises usual hollow body 1, towhich is removably secured in any appropriate manner the ironing block2. The body is provided with ahandle 3 and with feet 4 at one endthereof, on which the body maybe supported while cooling or while not inuse.

Within the hollow body l'above the block 2 are arranged the resistanceelements, through the energization of which heat is imparted to theblock 2. These elements are preferably arranged between sheets of.asbestos 5, and include two distinct resistance elements 6 and 7, whichmay be of any desired or known construction.

Projecting through one end of the top of the body preferably adjacentthe handle, are three contact posts 8, 9, and .10, and these posts areconnected to the respective resistance elements in the following manner:the resistance element 6 is terminally connected to the posts 8 and 9,while the resistance element 7 is terminally connected to the posts 8and 10. The-posts are insulated from the body as at 11, and project somedistance above the upper surface of the body, as shown.

As an important part of the present invention, I utilize a socket member12 preferably constructed of two sections 13 and 14 of non-refractory,insulating material. The socket is formed with spaced channels 15, 16,and 17, in such relative'positions as to permit their cooperation withthe respective posts 8, 9, and 10. Contact blocks 18, 19,

and 20 are arranged' at the upper ends of the channels 15, 16, and 17,the blocks being preferably extended lengthwise the channels in the formof contact sleeves 21. The upper end of the post 20 is slotted orlongitudinally divided to receive one end of the switch blade 22 whichis pivotally mounted upon the central post v19. The switch blade is ofL-form, the terminal of one arm being connected to an'operating handle23 which extends through a slot 24 in one section of the socket, so thatthe switch may be moved to an operative position, as shown in Fig. 3, orto an inoperative position, as shown' in Fig. 2. The switch forms theterminal of the conductors-25, 26', of any lighting circuit, saidconductors within the socket being led respectively to the. posts 18 and20, so

that thepost 19 is free of direct connection in the circuit.

In use, with the parts arranged as de scribed, it is obvious that withthe switchin'"- operative position, as shown in dotted lines in Fig. 2,and the socket in engagement with all of the contact posts, the currentpasses through both resistances 6 and 7 developing the maximum heat.With the switch in inoperative position, as shown in full lines in Fig.2, the current passes through the resistance 7 only, developing a mediumheat. If the socket is shifted, so as to engage the channels 15 and 16with the contact posts 9 and 10, and the switch moved to operativeposition, the current will pass through the resistances 6 and 7 inseries with a developing of the minimum heat.

From the above construction, it will be understood that the improvedflat iron is electrically heated. in a manner to place at includingthree contact posts carried by the irons, two resistance elementsarranged within the iron, one terminal of each of said elements beingconnected to one of the posts, the remaining terminals of each of saidelements being connected respectively to the remaining posts, incombination with a socket having a contact channel for each of saidposts, energized blocks in two of said channels, a normallynon-energized block in the remaining channel, and a switch element

